In this example, the following chain can be read:
Sales (m_sales) must be less than 150 AND (
the “pages” dimension (d_page) must contain “home”
OR the “pages” dimension (d_page) must equal “engines”
)

It is not possible to apply OR filters between two different columns.
Filters are applied to raw data, in the language of the returned results. In the above example; the filter sources = “engines” only works in English. If the results are requested in any other language, this filter will not return any results.
The filters do not apply to variations (for example “columns”), nor do they apply to ratios in relation to the total row.